Staybolt structure



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1 347 560 PatentedJuly 27,1920.

ma NW mumm UNITED-STATES PATENT OFFICE.

BENJAMIN n. n. srarronn AND ETI-IAN I. nonns, or :errrsnunen,PENNSYLVANIA,

' I .ASSIGNORS T0 FLANNERY BOLT COMPANY, OFPITT SBURGH, PENNSYLVANIA.

j STAYBOLT STRUCTURE.

To all whom it may concern:

Be it known that we, BENJAMIN E. D. STAFFORD and E'rnAN I. DODDS,citizens of the United States, and residents of Pittsburgh, in thecounty of Allegheny and State of Pennsylvania, haveinvented certain newanduseful Improvements in Staybolt Structures, and we do hereby declarethe following to be a full, clear, and exact description of theinvention, such aswill enable others skilled in the art to which itappertains to make and use the same. I This invention relates toimprovements 1n staybolt structures, .one object of the invention beingto provide a structure 111 whlch the bearing sleeve or member for thespherical or spheroidal head of a staybolt, shall be sov mounted in theouter boiler sheetthat it ,will become so disposed as to insure accurate'alinement with the bolt opening of the inner boiler sheet when the twoboiler sheets are disposed at an angle to each other or when theopenings in parallel boiler sheets are not in accurate alinement, and toprovide: means whereby the bearing member may be secured in the position1n which it may be set or adjusted.

With this and other'objects in View, the

. invention consists in certain novel features of construction andcombinations of parts as hereinafter set forth and pointed out in theclaims, l 1 In the accompanying drawings; Figure 1 is a sectional viewillustrating an eIl'lbOClP ment of our invention, and Figs. 2 and 8aresimilar views showing certain modificag tions. I I 1 represents aninner'boiler sheet, and 2 an outer boiler sheet such, for example, as

the roof sheet which is disposed at ans-angle to said innersheet, 1Theouter or root sheet 2 is made'with openings, each ofwhich'may betapering- 'viz. made larger at theouter end than at Specification ofLetters Patent.

Application filed April 30, 1919.

' Patented July 27, 1920.

Serial No. 293,629.

made with an opening 5 therethrough which end of the staybolt may bethreaded to pass through the inner boiler sheet 1 and this inner end ofthe staybolt may be upset against the inner boiler sheet, as shownat 9.

The outer or upper portion of the partly spherical sleeve or bushingmember 4 is threaded interiorly as at 10 to receive the external threadsof a cap or closure 11 having an angular portion 12 to receive a wrench.The inner portion of the cap or closure 11 may be recessed to provide anadequate clearance space 18 between the bolt head and the cap.

IVhen the partly spherical bearing sleeve or bushing shall have becomeproperly set or adjusted, said sleeve or bushing will be welded to theboiler roof sheet 2 with the use of a wvelding alloy (as indicated at14) which is located around said sleeve or bushing in a manner to becomewelded to the same and to the boiler roof sheet and to enter anyrecess(as at 15) which may oc cur between the outer face of said sleeve orbushing and the edge of the opening in the boiler sheet, said sleevebeing thus 1ntimately united to the boiler sheet.

In the form of the invention shown in Fig. 2, the head? of the stayboltis made more nearly spherical than the bolt head 7 shown in Fig. 1. Inthe construction shown in'Fig. 2, the opening through the partlyspherical bearing sleeve or bushings is made slightly tapering with thecurved seat 4 for the bolt head at its lower endan'd said sleeve orbushing''c is made with an annular flange or extension 16 which isinternally threaded as at 17 to receive an externally threaded closure18. This closure may be provided with a flange 20 to overlie the annularflange or extension 16.

In the construction shown in Fig. 3 the sleeve or bushingindicated at 21has a general tapering shape with the bearingfor the bolt head 7 initslower curved or partly greater diameter at spherical portion 22. In thisform, the wall of the opening 23 in the boiler roo'l or sheet thecurvature of the wall of the opening in the boiler sheet, is intended tomean that said wall is curved in a direction extending from one face ofthe'sheet toward the other face, and the use of the term tapering indescribing the opening in the boiler sheet. is intended to describe anopening which has one end than at the other.

Other changes might be made in the dey tails of construction of ourinvention without departing from the spirit thereof or limiting itsscope and hence we do not wish to restrict ourselves to the precisedetails herein set forth.

Having fully described our invention what we claim as new and desire tosecure by Letters-Patent, is I 1. In a staybolt structure for boilers,the

combination with a boiler sheet provided with an opening, of a sleeve orbushing adapted to have initial universally movable mounting in saidopening and having an illterior bearing for the head of a staybolt, astaybolt having a head mounted on the interior bearing of said sleeve orbushing and means forsecuring said sleeve or bushing to the boilersheet. 7

9.. In a staybolt structure for boilers, the combination with a boilersheet provided with an opening, of a sleeve or bushing adapted to haveinitial universally movable mounting insaid opening and having aninterior bearing for the head of a staybolt, a staybolt having a roundedhead mounted on the interior bearing of said sleeve or bushing, and awelded connection securing said sleeve or bushing to the boiler sheet.

3. In a staybolt structure for boilers, the combination with a boilersheet having, an opening provided with a transversely curved wall, of aspheroidal sleeve having a mounting on said transversely curved wall,said sleeve or bushing having a bearing therein for the curved head of astaybolt, and a staybolt having a rounded head mounted on said bearinginthe sleeve or bushing.

4. In a staybolt structure for boilers, the combination with a boilersheet having an opening provided with a transversely curved wall, of aspheroidal sleeve or bushing .mounted on said transversely curved wall,

said sleeve or bushing having an interior bearing for the curved headofa staybolt, a

, staybolt having a curved head mounted on said bearing in the sleeve orbushing, and a weld securing said sleeve or bushing to the boiler sheet.

. 5. In a staybolt structure, the combination with a boiler sheet havingan opening, of a spheroidal member mounted in said opening and having anopening therethrough larger at one end than at the other, saidspheroidal member also having therein a bearing for the head of astaybolt, and fa weld securing said spheroidal member to the boilersheet.

6. In a staybolt structure, the combination with a boiler sheet having atapering openingtherein, of a bearing member having an initialuniversally adjustable mounting in said tapering opening, said memberhaving an internal bearing for the head of a staybolt, a staybolt havinga head mounted in said bearing member, and a weld securing said memberin adjusted position to the boiler sheet.

7. In a staybolt structure for boilers, the combination with a boilersheet having an opening, of a spheroidal member adapted to have initialuniversally movable mounting in said opening, said spheroidal memberhaving an opening therethrough which is larger at one end than at theother and also having a bearing for the head of a staybolt, a staybolthaving a head mounted on the hearing within said spheroidal member, and

a closure closing the larger end of the open ing in said spheroidalmember.

8. In a staybolt structure, the combination with a boiler sheet providedwith an open ing having a transversely curved wall, of a spheroidalmember mounted-on said transversely curved wall, said spheroidal memberhaving an opening therethrough which is larger at one, end than at theother and also having an interior bearing for the rounded head of astaybolt, a staybolt entering said spheroidal member and having arounded head mounted on the bearing therein, a closure closing thelarger end of the opening in said spheroidal member, and a weldedconnection between said spheroidal member and the boiler sheet. I

9. In a staybolt structure, the combination with a boiler sheet having asocket seat, of a spheroidal sleeve mounted in said socket seat wherebya ball-and-socket connection is alforded between said sleeve and theboiler sheet, the said spheroidal sleeve having an opening larger at oneend than at the other end and having therein a bearing for the head of astaybolt, and a staybolt entering said sleeve and having a head mountedon the bearing therein, and means for securing said spheroidal sleeve tothe boiler sheet.

10. In a staybolt structure, the combination with a boiler sheet havingan opening, of a spheroidal sleeve entering said opening and having abearing for a bolt head, and means for securing said spheroidal sleeveto a boiler sheet.

11. In a staybolt structure, the combination of a boiler sheet having anopening, of a spheroidal sleeve having therein a bearing for a bolthead, said sleeve entering the open ing in the boiler sheet, and a weldsecuring said spheroidal sleeve to the boiler sheet.

12. In a staybolt structure, the combination with two boiler sheets, oneof said sheets having an opening therein, of a spheroidal sleeve adaptedto have initial universal mounting in said opening in the boiler sheet,said sleeve having an internal bearing for the head of a staybolt, astaybolt having a head mounted on said internal bearing, means securingthe other end of the staybolt to the adjacent boiler sheet, and meanssecuring said spheroidal sleeve to the boiler sheet in which it ismounted.

13. In a staybolt connection for boilers, the combination of a boilersheet having an opening with a curved or rounded wall, and a curved orrounded sleeve mounted in said opening and supported on said curved orrounded wall of the same, the said sleeve being secured to the boilersheet by welding.

14. In a staybolt connection for boilers, the combination of a boilersheet having an opening, a sleeve adapted to have initial universallymovable mounting in said opening, and means for securing said sleeve tothe boiler sheet, said means consisting of a welded connection betweenthe sleeve and the boiler sheet.

15. In a staybolt structure, the combination with boiler sheets, one ofsaid sheets having a socket seat, of a sleeve of tubular form and havinga curved outer portion mounted on said socket seat, said sleeve having aseat therein for the rounded head of a staybolt, a staybolt having arounded head mounted on the seat within said sleeve, means for cappingthe sleeve, means for securing the sleeve to the boiler sheet in whichit is mounted and means securing said bolt to the other boiler sheet.

16. In a s'taybolt structure, the combination with a boiler sheet havingan opening, of a sleeve having a ball-and-socket connection with theboiler sheet at the opening therein and having aninternal bearing forthe head of a staybolt. 17. A hearing sleeve for the head of a staybolt,having an exterior curved portion forming a seat whereby said sleeve mayhave universal adjustment in a boiler sheet, and said sleevehaving aninternal seat whereby the head of a staybolt may be mounted therein.

In testimony whereof we have signed this Specification in the presenceof two subscribing wltnesses.

BENJAMIN E. D. STAFFORD. ETHAN I. DODDS.

Witnesses:

F. H. ALLISON, EDWIN S. RYoE.

